A vector has magnitude and direction(i) Does it have a location in the space?(ii) Can it vary with time?(iii) Will two equal vectors a and b at different locations in space necessarily have identical physical effects? Give examples in support of your answer.

(i) A vector in general has no definite location in spacebecause a vector remains unaffected whenever it isdisplaced anywhere in space provided its magnitudeand direction do not change. However, a positionvector has a definite location in space.(ii) A vector can vary with time e.g., the velocity vector ofan accelerated particle varies with time.(iii) Two equal vectors at different locations in space do notnecessarily have same physical effects, e.g., two equalforces acting at two different points on a body whichcan cause the rotation of a body about an axis will notproduce equal turning effect.